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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures (B1000 To U1833) >> Diagnostic Information And Procedures >> DTC U0073 Or U2100: Control Module Communication Bus A Off/CAN Bus Communication >> Circuit/System Description
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Circuit/System Description

The serial data circuits are used to communicate information between the devices. The serial data circuits also connect directly to the data link connector (DLC).

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